Patents by Inventor Osamu Shiba

Osamu Shiba has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fabri-perot spectroscopy method and apparatus utilizing the same
    Patent number: 4850709
    Abstract: Fabri-Perot spectroscopy method comprises a step of directing a light beam at a first refraction angle to a first Fabri-Perot interference plate and a step of directing a light beam transmitted through the first Fabri-Perot interference plate to a second Fabri-Perot interference plate at a second refraction angle, and Fabri-Perot spectroscopy apparatus comprises Fabri-Perot interference plates, a control device for changing a spacing between the Fabri-Perot interference plates, a first optical device for directing a light beam to the first Fabri-Perot interference plate at a first refraction angle, a second optical device for directing the light beam transmitted through the Fabri-Perot interference plate at a second refraction angle different from the first refraction angle to the second Fabri-Perot interference plate, and a seal for externally sealing the Fabri-Perot interference plates. Gas for protecting the Fabri-Perot interference plates is filled in the sealed space.
    Type: Grant
    Filed: February 27, 1987
    Date of Patent: July 25, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mikichi Ban, Osamu Kakuchi, Hironori Yamamoto, Masaru Ohtsuka, Osamu Shiba, Kazuhiko Hara